Hafizh, Doejan Grada, and Agus Suwahyono. “Problem-Based Learning Model in Arts and Culture Subjects Vocal Arts Materials for Grade 9f at SMPN 3 Kutorejo”. Solah 11, no. 1 (December 9, 2025): 66–86. Accessed October 17, 2026. https://ejournal.unesa.ac.id/index.php/solah/article/view/73477.